Hello team,
This is Ochi.
In p.24 with a datasheet for DRV8889-Q1, I saw below sentences.
"In cases where current is held for a long time (no input in the STEP pin) or at very low stepping speeds, slow decay may not properly regulate current because no back-EMF is present across the motor windings. In this state, motor current can rise very quickly, and requires an excessively large off-time."
Could you tell me why no back-EMF is present across motor windings in those cases ?
Best regards,
Ochi
